Technical support

Frequently Asked Questions

• Can I operate impulse switches and dimmers with multiple, potential-free 24V push buttons?
  This combination is possible.
  
  Attention: Use dimmers in which the push-button input and the 230V input are galvanically isolated.
  
  Consult the push button user manual for the wiring diagram.
  
  
  Potential-free push button 24V with LED, normally open 4-fold
  Potential-free push button 24V with LED, normally open 6-fold
  
  
• Can I switch on/off economy and LED lamps with a two-wire actuator?
  

  A two-wire actuator only switches on/off 230V incandescent and halogen lamps (40-400W) with ohmic loads. For economy and LED lamps, use an actuator with a relay contact.

  Base with switching contact 10A, 230V

  
  
• How do I programme more than one device to one bell push button?
  You define groups with the programming software of the telephone exchange.
  
  This group number is programmed via the speech menu under the bell push button. You gain access to the speech menu by calling the external device.
  
  
• What should I do when the message “Opening of the COM port failed” appears on the computer screen while connecting a computer to a Nikobus installation?
  Depending on your version of Windows, you can manually change the COM port settings (assigned to the USB/serial adapter) by following the below-listed steps.
  
  Windows XP
  
  Open the configuration screen.
  Select “System”.
  Select “Hardware”.
  Select “Device manager”. You will then see a list of all PC parts. Under “COM & LPT ports”, you will find the USB/serial adapter (Prolific), together with the COM port assigned to the adapter. If this COM port is not COM1, 2, 3 or 4, you can adjust this manually.
  Select the USB/serial adapter and right click.
  Select “Properties…”.
  Select “Port settings”.
  Select “Advanced”.
  In this menu, change the COM port to COM1, 2, 3 or 4.
  
  Windows Vista
  
  Open the configuration screen.
  Select “Hardware”.
  Select “Device manager”. You will then see a list of all PC parts. Under “COM & LPT ports”, you will find the USB/serial adapter (Prolific), together with the COM port assigned to the adapter. If this COM port is not COM1, 2, 3 or 4, you can adjust this manually.
  Select the USB/serial adapter and right click.
  Select “Properties…”.
  Select “Port settings”.
  Select “Advanced”.
  In this menu, change the COM port to COM1, 2, 3 or 4.
  
  Windows 7
  
  Open the configuration screen.
  Select “System”.
  Select “Hardware”.
  Select “Device manager”. You will then see a list of all PC parts. Under “COM & LPT ports”, you will find the USB/serial adapter (Prolific), together with the COM port assigned to the adapter. If this COM port is not COM1, 2, 3 or 4, you can adjust this manually.
  Select the USB/serial adapter and right click.
  Select “Prop
• When I press the bell push button on the external unit of the “Access Control Design” range, the devices do not ring, and I immediately receive the message “your call has not been answered”. Why does this happen?
  

  There are three possible causes:

  • There is no telephone line connected to the interface for the external unit.
  • You have not programmed a call number for the bell push button.
  • The installation is in night mode, and you have not programmed a call number. Use key 4 in the menu to switch between day and night mode.

  Interface for external unit